The result indicated that dust acarus, air pollution or passive smoke was the quite dangerous factor in the many factors of the asthma. It was very important to strengthen the study of the infant and child prevention and cure.

• 结果提示 :尘螨、空气污染和被动吸烟是诸多哮喘触发因素中具高度危险性的因素 ,加强这方面的对策研究对儿童哮喘的防治具有意义